Telegraphic type-writing system.



P. ETIENNE.

TELEGRAPHIC TYPE WRITING SYSTEM.

APPLICATION man AUG. 19. ml.

Patented Mzu. 28, 1916.

8 SHEETS-shill "ll tutu-mu man" ax. Innmuvun. l\ v.

P. EHENNE.

TELEGRAPH) TYPE WRHING SYSTEM,

APPucATmu man AUG. :9, 1911. r Y Patentsfi Mar. 28, 1916.

m a SHEETS-SHEET 2. 5 I l ws' awn 7/ M n 02? z f z i EHENNEx TELEGRAPHIC TYPE WRlTiNG SYSTEM.

AFPUCATION FILED AUG-19.1911.

Patented Mar. 28, 1916 a swans-shin s.

1, mam;

P. ETIENNE.

THE-GRAPHIC TYPE WRITING SYSTEM.

APPLICATION FlLED AUG. 19. 191k Patented Mar. 28, 1916.

8 SHEETS-8H5 4.

P. E IENNE. TELEGRAPHI'C TYPE WRITING SYST M.-

a 1 APPLICATION FILED AUG. 19, 19H. f Y! n 1 ,mg ggig Pat-{med Man 28, 191m 8 SHEETS-SHEET P. ETIENNE" TELEGRAPHSC TYPE WRITING SYSTEM.

APPUCATION. FILED AUG-19, 19H.

Eatentei Mar. 28, 1916.

8 SHETSSHEET 7.

flli Impi-m'ements in PAUL ETIENTTIE, G1

BUBCHABJL-T, 035 BERLI SCRMIAEGEEEKJORZ,

3'1. FISHER, 521

/ Fig mm. AN?) we Frame .elxinteii'immi I TELEGRAEHIG TYPE-REEEHQIKG- SYSTEM.

ilppiieetien flied August 19, 7.811.

To all 107mm 2'1 72mg concem:

mused to move the types of receivers into their pi" iing posi; 1m. hie particular type that moved inte its grin'ing pusitien being deteiaimed by the number of impulses sent.

An imigoi'tant feature of the system e011- in the operations performed. in the receivers, besides Lime of bringing the particuimtype that is to be primed m0 pus-imam. such as the act of printing, returning the parts to' heir nm'inai posit-ions. eta, taking place on the. cessation bf the current impulses by a member being; released that is heid fast while the series of impulses flows. :n conneciion with this feature the Whole arrangement of the system is peculiar and it is s0 constructed that combines rapid and manipulation with simplicity of design. 'lhis system enables, all the fenc time 01" file i'fii'iiiYPl to he iei-formeiii w th :1 single c-(miti'eliing magnet. In adciiti -21 n11 pmetieni requiremenfiss are provided 7501', devices being furnished to i'eiidei' the wi'iting Visible immediately after it has been printed; 01; autmnaticaily returning. the type wheel to iis normal position. for shifti'ng the Wheel on after a, letter hag been printed, fer returning it t9 the em? oi the page for commencing a new line, for moving on the paper-and the inking riblmn anci for insuring reliable Wei-king.

The various Ieatures peculiar F i g.

the description of a farm of the system i1ius- 5% heated, in the drawings.

n 1:5 '1 i. .3... mini maxim e l lgllFB 1, In asicfie ehevzinon of the I'-lC-EIVQF viewei "5mm the left 01"? 4 .0 2. certain being broken away.

vie w. Fix:

.ieveiz the W1 931m 15; ewheei. parts in iiei -j T peseii betw eypewiieei i0 51in: ribbon vibrate the typewheel supguzting shaft in longiiu zlinai section so to diselosecertain pares used fer shifting the typewheel axially and s 5 axial pesiiiee radially. 7 is a crass sectien of Figs.

and (3. F 1g. 8 represents ihe pew 2 61 15 rutche arranged at the right end Ff the cpeii'heei supporting si-" iift eiieivn in i5 whim pawl and meiieserve n move me zypewheei raciiaiiy. 1 1%. ii iiiusmies iahe' spring box that ISUPJYQHQS the pewei m1 drivm ing typewheei. 1 3 is an eieveien N1 the ieuen er seen more he rage: of 1. 2. Big. 11 is side view from she Eefl of (he spring meter aii'iqving the moving; parts of the receiver.

view of said'moter, and .1- 13 is a side view thereef seen from Elm right. Fig. M shmve a portion Q5 an automatic switch i501 switching an eleeti'ie meter eeiipemting with the spring-Emit m -ini o agent of circuit, 8%

said electric mew being emitted from we drmvings. Fig. 15 refaresems {mother part 0f the autemefiic switeii eferementienefl. Fig. 16, is a right-mini side VifiW of 1. {gramsmiiier which is suitable fer use in cmmeciieii wiih iie reeeivei' shown i 0 Fig. 17, is a p view of transmit- ":beir. Fig. 18, is deiaii view. Fig. 1? shows the pz-iiieipai member and the'eieeti-ieel connections 0% the transmiiter. Figs. 90

20 to 23 illustrate a medifiezl E rm e1. H3213" mitten Pivotally invented in the sides 1 m d 2 'of-thef'eame. of the leeuiver is the eupporb ing @aei? of the typewheei 16. The shaft I 3 ca'wiefi an. arm 4 t0 which a pawl 5 that ev the sys hem will he most readily unersteod from" engages-Widths. mtehet wh'eel Qfi (see Fi en. the Silii is restore the:

j! and (i, anew I 152 is a fi'ent 75 rod 6 enters into a hole-in the pawl 5 (see Fig. 6) so that by the motion of the rod the pawl can be lifted clear of the wheel 29. The left end of the shaft 3 is hitched by a hook 7 to one end of a spiral spring 8 the other endof which is fastened to a pin 9 on the frame. The spiral spring-is wound up when the shaft is turned forward by the pawl 5 acting on the ratchet 29 and has the tendency to turn the shaft back when the pawl is lifted out of the ratchet teeth. Through the whole length of shaft 3 there is a central hole and a narrow radial slot 10 (Figs. 5 to 7). The shaft has also a number of transverse notches 11. In the slot 10 there is a rack 12 the ends of which are round and are inserted in the central hole of the shaft. A spring 14 which at its one end presses against a pin 13 fixed to the end of the rack 12 tends to shift the rack in the direction of its length, so that it will be returned to the normal position. shown and determined by .the stop 15 as soon as any power that has displaced it ceases to act. Pivotally fixed by a screw 17 to the hub of the typewheel 16 and adjacent to each other are the detents 18 and 19, the detent 18 en gaging with the teeth of the rack 12 and the detent 19 being in engagement with the teeth 11 of the shaft 3. When the typewheel moves along its supporting shaft? a carriage 20 which rests in'a groove in the hub of the typewheel slides along with it. Attached to the carriage 20 are the metal cords 23, 24- leading to two drums 21, 22

.. which are rigidly coupled to each other and are under the influence of a spiral spring 25. The latter tends to haul the carriage 20, and.

with this the typewheel, back into-its initial longitudinal position whenever the typewheel is released from the transverse teeth.

of the shaft for the purpose of beginning the writing of a new line. The gear for I turning the tyewheel into the, desired radial position consists of an escapement wheel 28, a ratchet 29 and a gear wheel 2'? which latter engages with a cog wheel of a spring box 31.

26 is a shaft to which the wheels 27, 28 and 29 are rigidly fixed and this shaft is pivotally mounted in the angle piece 30 of the frame of the machine so as to be in an exact line with the supporting shaft 3 of the typewheel.

' the escapement wheel 28' is regulated by the two-part esc'apement lever 84 pivoted on the angle piece 35 (Fig. 10). The escapement lever is coupled by a pin 37 and an arm 38 4 electromagnet 39 and an impulse in the one direction will cause the armature 36 to be moved'away from the one pole 45 and to be attracted to the other pole 46, while an impulse flowing in the. other direction will cause the armature to oscillate in the other direction. By virtue of the pin 37 and the arm 38 the armature 86 causes the escapement to oscillate with it and on each oscillation of the lever 34 the eseapement wheel 23 is moved forward by the spring box by half the distance between the centers of two adjacent teeth and this rotary motion is participated in by the ratchet wheel 29, which, by means of the pawl 5, also turns the typewheel. i

In addition to the polarized armature 36 the electromagnet 39 has, at its other end, an armature 40 which *is attracted by the pole pieces 41 and 42 whenever the electromagnet is excited by alternating current impulses. The electromagnet 39 is so arranged that the armature 36 is oscillated by each current impulse while the armature 40; re-

mains attracted as long as the impulses continue to flow. As soonas the current impulses cease the armature 40 is drawn back into its normal position against the screw stop 44: by a spring 43. The armature 36 will have been pulled up against the pole 45 or 46 according as the last impulse was a negative or apositive impulse. For reasons set forth further on the armature 36 is at the end of each series of impulses, always caused by'mechanical means to assume the position into which it is brought by a negative impulse even if the last impulse was a positive one; so that when itis at rest it is always ready to immediately respond to a positive'impulse.

The release of the typewheel after the letter turned into the printing position has been printed and the moving on of the typewheel to position of the next letter is accomplished by moving the rack 12 by means of a lever 47 which rests against the head 13 of the rack 12. The lever 47 is rigidly cou pled with the arm'48 by the'shaft 49 which machine. The printing lever 53 is caused is pivotally mounted in the frame of the of the arm 48 but when this lever moves back the arm brushes against the protuberance causing the arm 48 to be moved aside platen advancer is a pawl 62 (Figs. 2 and 10) which engages with the teeth of the ratchet wheel 33 stepping it forward each time the platen 57 is advanced and. this winding up the spring of the spring hos 31. The platen advancer is actuated by a local source of power through the medium of an armature 40 which is caused to move in the manner described below at the end of each Series of current impulses.

The working of the parts described thus far is as follows: When the escapement lever 34 is oscillatedby the armature 36 the escapement wheel 28 is allowed to turn and in so doing the pawl 5 on the arm 4 rotates carrying the ratchet Wheel 29 and the sup porting shaft of the typewheel 16 around with it, the typewheel 16 being thus also caused to rotate, it being coupled to the ii -shalt by the detent 19 lying in the slot l0.

After the typewheel has been thus rotated into the required position the platen advanoinglevers and 54: are swung forward in the manner described below in conse quence of the cessation oi the current impulses that control the rotary motion of the typewheel. When the platen advancing levers are drawn back into their normal position by the spring 61, the arm 48 and with this arm the lever l? is made to oscillate toward the right and this oscillation is imparted by the lever 47 to the rack 12, the length of the oscillation being the distance between two letters on the printed page.

o During its oscillation to the right the rack 12 pulls the typewheel along with it by means of the pawl. 18. /Vhen the rack 12 is returned to the left to its normal positionthe typewheel is held in its avanced position by'the detent 19 which grips the next toothof the supporting shaft. In oscillating to the right the right handend of the rack 12 brushed againstthe slantingend of th'rod 6 (Fig; 6) *an'dcaused'this rod to slide outward so that the pawl 5' was for a moment lifted clearof the"ratchet 29 enabliiig' the spiral spring :8 to turn the supportin shaft 3"with the typewheel lo into its normal rotary position.

"B an t cwheel into the writ ing roller Attached to lever of the the pawl carrying arm is a hell crank 4 which turns on a pivot i (Figs. 2, 3 and 10). When in its normal position the lower arm of the hell crank al is held against a stop 4 by spring. Attached to. the end of the other arm of the hell crank is a finger 4 which lies in the path of a downwardlypointing extension of the pawl carrying arm 4. l'Vhen the arm 4;, in rotating the ing; position, turns in the direction indicated'by the arrow in Figs, 8 and 10, thedownwarrl extension oi the arm l pushes the linger down without moving the bell crank l with its pawl 6 lifted clear of vthe ratchet 29 turns back into its normal position, the downward extension in brushing past the linger 4 causes the bell crailk l to be deflected so that its downwardly poii'iting arin moves the polarized armature 86 away from the pole 45 of the electromagnet and causes it to lie against the pole l6 if it should not already have been in this positionv The purpose of this contrivance is to always put the armature 36 in the position in which it is ready to respond to a positive current lll1- pulse.

' The source of power for moving the platen advancer, (the existence of which has so far been merely assumed indescribing Figs. 1 to 10) and the devices belonging to the same consist chiefly of the electromagnet 63 which ceii'es current iroin any suitable cnrsource. The mature (i l of this elec gnet 1S- attached to an arm 65 that is .dly fixed to the v and 54 of the platen a-lvancer. The current for the electroma net is switched on b T an automaiicaliy controlled SWltill w hicn is actuated. by the armature $0. This switch is clearly shown in l0 and consists ,cliiefiy of pivoted hook-shaped arm 66 pulled to the left {Fig 10) into the position indicated by dotted lines Where it is held by a small double armed detent 73 that is pressed downward by a spring 72. While it is in this position the arm 66 establishes an electrical connectionwith the contact spring- 74 hot it does not close the local circuit of magnet 63 because the spring 68 and the clock 71 are out of contact. When the armature, on the cessation of the cal-rent impulses flowing through magnet 39 is 're leased it falls back against the adjustable But when the arm v is of the levers 53 stop 44 moving the arm 06 toward the right. During this movement the hook of arm 06 takes the lever 69 along with it until ,the detent 73 slips outofthe hook 66 and the lever 69 flies back into its normal position. Before the lever 69 detaches itself from the arm 60 the spring 68 slidesonto ing a new line shown in Figs. Qand On its one side the typewheel has a rectan gular projection 76 which, as long as the typewheel isin its normal position, presses a finger 77 to the left. This linger is pivoted on a pin 78 in the carriage 20 and a spring 7 9 turns the finger in a. clockwise direction Fig. 2 whenever the rectangular PIOJBCtlOIl 76 is moved away from 1t. PIV- oted on the finger 77 by a screw pivot 88 is a two armed lever 81 which in its normal position. is pressed against ,a stop 83 by a spring 82. The size of the rectangular projection 7 (Sis such that the device. forreturning the typewheel to the left end ofthe page acts whenever a small number of impulses only 6. y. one or two, are sent through the controlling magnet '39. This causes an angular or rotary displacement of the typewheel so small in extent that the projection 76 does not leave the finger 77' so that the.

two-armed lever 81 remains in a perpendicular posltlon e. at right angles to the type wheel supporting shaft 3. In this position the one end 81 of the two-armed lever 1s in line with outwardly directed rear extensions of the. detcnts18 and 19 and will press against these detents if the lever 81 turns onits pivot 80. This it is caused to do whenever the platen advancer is operated at the end of a series of line current impulses.

The cross bar 84 then brushes up against the end 81 of the lever 81 and turns this lever on its pivot 80 causing the other end 81 to push the rearextensions of the detents l8 and 19 inward, so that their other ends release their hold of theteeth of the rack 12 and of the supporting shaft 3. spring 25 will then by means of the cords 2,3, pull the typewheel to the'left until its hub strikes against the ringSS Some of the force expended by the type when] in flying back into its left hand position is utilized for moving on the paper sheet or page to the next line. This is done by the hub of the typewheel striking the top end of the bell crank lever 86 which juts into a slot in the ring 85 that takes the blow The I for cord 120 with an extension 1'21 of the .lever 86.- Each time the typewheel 'is reports .87 and 88. The shorter arm of the bell crank lever rests upon the one arm of the V-shaped lever 90. The other arm of the lever 90 is connected by a rod 92 with a pawl carrying lever 93.

9 1 is a spring that tends to pull the lever 93 against a stop 95. Pivoted on the lever 93 is a pawl 96 that engages a ratchet wheel 97 which is fixed on a shaft carrying a paper roller 60. lV-hen the typewheel is moved out of its left end po sitionto the right it is followed a short distance by the lever 86 by virtue of the spring 94. pulling the arms 90 and. 93 upward. The pawl 96 then slips into another tooth. The stroke subsequently dealt by the typcwl'ieel on the upright end of the bell crank lever 86 pullsthe lever has paid out the whole of the ribbon the direction of roation of the drums is auto- .rnatically reveised so as to cause the inking lf-ibbOIl lotrail el' in the opposite direction.

"T he drums are each rotated by a ratchet wheel 102 and 103 which turn upon pivots 104: and 105. The ends of the ribbon are fastened to the drums in a known manner and are furnlshed at a distance from the ends of aboutone turn of the drum, with spring clasps 106 and 107 which grip-the 1. I I v ribbon securely. The inking ribbon passes from the drum 100 over the guide roller 108,

through slits in the frame of the machine, over the guide roller 109 onto the second drum 101. F

110 is a sliding bar which moves at right angles to the supporting shaft 3. It is guided by. the screws 11.1, 112, and carries a three-armed lever 114 on a pivot 113 and a pin 115. At the lower end of the arm which .lies between the two drums the three-armed lewer 114 has an ilpwardly-pointing extension 114 (Fig. .1) vto which a. spring 116 is attached. This spring tilts the lever 114 beyond the deadcenter.

11'? is springthat tends to pull the sliding bar 110 into the position shown.

' 118 is a bell crank lever which turns on a screw pivot 119 and is connected by a rod with the ratchet 103 as indicatedinithe same at that Eminent 5 r1 Mam i112 e m 31% moving it ever untilihe 25 Fm this purpsse Eight 50 the driving meshanism may we 55 shaft 1301s transf w to he mecharism 5bit tab w box 13-9 which corresp'q figure 233 mb'ied ling Q31 the; sliding bar 13%? being resse Nani ihe arzicuimr wheel with which file pain 114 is engaging .jps amun causing is 39111. ens dram onm the ether] the 9m is 'xaeaa iy BEER??? the @3525 107 igaavesfi'ae rip @231 f the as shown a2 123% right at? 3 andsiriii q the @161 $1 the have? midie iii- 'is'tilized agams; b.;- oisimr minke-$3 103 by the action sf ilhe 3.1% $0 rthaf; thgsucs wing mwea'nents 3f *2 have" W8 L3. W35 cause: 3; zibben $0 30% we n. mm @3301 i s'.. 44; 1am *5. =11 new mm, L i: sta -3d, my im'emian i limited to miss f easura,

0 main the Writing; visinie immxefliziniy each 192m mam thsinking nbbez: is rammed firm). the 122m: baizig wrwmn afier @ach .mavement the plazas MEYER 2e structure the shame m? a paralleiaggragn, consisting 075 M0 ievars a 1155mm guide 125 .1 angulaz" m the mews-m3 1233,15 9% 1 Tip T ribbon mz-zses eye {at i pf the 112 01311 F @1101 Emma vjfiositian 075 p Eaei dear of a V as 5mm as the platen ia- Q crofibar 8% strikes $1212 5. 6 Jar 128 am caiz'ses fins rifiboz; guidefiza mnvanp {in righi; is: 4:) ind imam: fibbun, beween tim pzzpey' sheet and 'ahe .40 being printed When this piafien advzgncaar falls; back the rzb sozi gulda 1% drnps dawn again of swn weight r exim'izxg waiting visible immediat iy sfizaz 1s 'Wr'ittm. v 1

in Figs. 13% a. power-23' ng ig lee or driving m'mnism ahawniwh'ach" be useci if tha'pawar far mceiver is derived from a STREB A711 the parts at" the receiver n01; connececi Wbfih scribed above. The 51 driving mechanism is as fefiaws; 1%

wcrm'shaft coupled is meter shown an thedrawing. The, re 1 mmgby-thfi waz'jaxa" 132 to the haiiz 133 whisk carries; box 13%"Whid1 latter 2. stems in; pave-r efi veyad ivy 521 give s out pew pz'egws-. mmnwis gelbe;

The shaft 112 B alsdcmries 53.3w whlch 1s geared thrpugk an 16%;" ma

' 1 13 which acs upon the end of an arm 4m fine shaft gprmg xgxembar 155 pressing against the flange or the sieeve 154: forms a fictional v-ordar in Fig. Th6 sgrring m 139 imparts; Tatar}; meiziu'fi iffhe simfi 26 i mough a pin icn 2. lsiinsi; 01. ihe shaffis 0f the gear *1, heel; as-r msntinn d are joulnaled in 116 pae spring; $K 134ithe gezw'whed 142 which is on the shaft 14-1. Aisu fixed an ibis shaft is Wheel 1 aihrmxgh a rol'ier A c0g- Whe e 14:1

fixed an the and 0f 1111a shaft 14-1 tums by means 01" an inmzimefliate gear i shown in $214: dmwmz, a gear wheel 1%? on a shaft 146 hi-shew: as twmarmed rotary ascapemenb m thecxrcular mm of me latter there 148. is a 5i whicifis flaked "by a. member 15 the: armature L9 0' th electrcmagnefi 39 n the mrmatum 49 is am'acted and a: fiemnt L9 ishejei; (Fig. 18)- ;be heni: and 5f 'ke fisca'g emenio max-Wis the 1.5133- atzfama of the defiant 14:5 mxL a wry $3102 counter-clockwise rowry mcvement s arikes a Iefig at the upper 91291 0f 521s defiant its motion is sm ppeci. 0n the suiasequent retraction 0f ihe armature 45' the 5am and of jizhe rotary eseapemfim slips cf? the ledge and passes dewnm1 2 5% lafi; side an? the same (Fig, 13)

ifis flt'har arm (latent.

2 driving mechanism i i @iectrcmomr madc'niy e, :5, whenevfir the a gi 1:. suita cerfiaifa SilOXI'i-d l fifiem, and is as gem; as it has sufficiently 112 spring boxes. The switching mmaiieall by $21 motien ef the spring box 13% arm the shaf, 133. The spring be 13 2 with ii). This sieave has 5219 form 0f a Hang-u at itaright and and 55312 spring has 134 a mamber fixed to which gemem .zww cuntinues to ylf-stxses againsfi $119 flange. The slam-e 1 PZ'EVMTIJQQQZ 15mm s'iig'ping toward the left 3.33 by a .ed 201121 156. The

, Zing b tween the 'slaeva 154: and the, nmngbsz 1 The sleeve 154; has a tooth switch, arm 158 this arm. being capable 1 swmgm'zg 11 an msulated pivot159. In

E's-p wung s gravity, r

8115'; of any pnsition by fig i that in mew it any j any nth-ex: pssition Efcertain' cfmsisiianc has is. be owsrcozne, this which engsges with pins or iseetn 154 EEVQTQZ the switch arm 158 fromhub of the arm 158. In addition to the cogs 15-1 the switch arm 158 has another set of cogs 153 on the upper side of the shaft 133 and on the side of the switch arm opposite to the cogs 151 A tooth 153 on a loose sleeve 153 with an oblique slot 152" meshes with the cogs 153 Protruding into the slot 152 isa pin 152 which is fixed in the shaft 133. i 1

151 are Springs which push the loose sleeve 153 toward the left into the position shown so as to normally keep the tooth 153 clear of the cogs 153 On their one side the springs 151 have projections 151 which enter into. recesses 151 in the flangeshaped end of the sleeve 153 and tend to prevent the sleeve from turning. supports, in addition to the switch arm 158 with hook-shaped end 158 an arm 161 pivoted on and insulated. from the pin 160. Pivoted on the end of the arm 161 is a small twoarm'ed catch 16:2 which is normally pressed downward by a spring 163. In its normal position the arm-161, which is farnished with a contact spring 166, is drawn up against the stop 165 by the spring 164.

The arms 161 and 158 are connected by wires 1 to the source of current supply and to the motor that furnishes the power for driving the receiver.

The working of the driving mechanism Just described is as follows: ll hen the receiver, in printing a message, is set in mou the switch arm 158 toward the arm 161.

V hen the arm 158 reaches the arm 161 its hook takes hold of the catch 162 and the circuit including the source of currentsupply and the motor coupled to the shaft 130 is closed and the motor starts running. The shaft 183 is then turned in the direction in which the spring box 13.4 previously rotated and while thus rotating the pin 152 pressing against the upper edge of the slanting slot 152, urges the sleeve 153 toward the right thus causing the tooth 153 to mesh with the cogs 153 and moving the switch arm 158 to ward the right (Fig. 1-1). In its movement thearm 158 takes the arm 161- a certain distance along with it in the manner described for the switch arm 66 (Fig. 10) when the hook 158 slips off and flies away from the member'162 and thus effects a sparkless rupture of the circuit. The motor will then stop running and the turning of the shaft 133 will cease. The pin 152 will also cease to urge the sleeve toward the right and the springs 151, the projections151 of which will now be pressing against flat parts of the flange portion of the sleeve 153, will cause The upright 157 this sleeve to move spirally toward left, the

tooth 1531 being thus moved out of engagement with the cogs 153. so that this tooth will not prevent a renewed forward movemcntof the arm 158 by the sleeve 154 when 70.

175 and 176 are two columns which connect the supporting trestle 17-1 with the angular frame 171. A rotary converter or generator not shown in the drawing and giving out alternating current is coupled to the worm shaft 117 which, by means of the 8B worm wheel 1T9.'the shaft 178 and the miter gcar wheels 186, 181 transfers its rotary motion to the upright shaft 173. Rigidl liked to the upright shaft is a coupling disk 1.82 which has a number of teeth 182.

Loosely mounted on the upright shaft is a sleeve 182% with two arms 1-84 and a contact arm 185. The contact arm is insulated from the shaft by a sleeve of hard rubber 186.

The-shorter one of the two arms 181 has a tooth 187 while the other arm carries a hinged piece 181 the bottom end )ortion of which has a slanting surface. The hub of, the insulated contact arm 185 serves arcurrcnt collector taking. the current from a 96 brush wiping on its periphery. The contact arm 18?) carries a swinging contact brush 188 which on being swung out of the position in which it is represented in Fig. 16

makes contact with the inner surface 0 the 1 0 insulated ring-189 fixed to the su )porting trestle 171 and to the frame 171. The whole sleeve 188 is held in its normal rotary position by a clock spring 190 attached to the pin 191. the normal vertical position being secured by a spring 190.

192 is a bow pivoted at its ends on the horizontal axis 191 and rests with its two small steel rollers 193 on a round ledge183 of the sleeve 183. Arranged above the bow 192 and also pivoted on the axis 191 are a number of key levers 195. Each of: thele keys 18 held in its normal upper position by a spring 196 attached to a supporting bar 197 and each key has attached to it a latch 198 pivoted on a pin'199 and urged inward against a holding ring 201' by a spring-200.

On a lever 195 being depressed the how 111:? is also pressed down it in turn depressing the sleeve 183 with the arm 184 and the contact arm 185. This causes the tooth 187 of the arm 184 to be caught by one of the teeth of the constantly rotating coupli disk 182 whichthen carries the arm around with it until it strikes the latch 198. This latch which was forced inward and hooked the key fast to the ring 201 when it was depressed is then pushed outward so that the key is liberated and the sleeve 183 1c arm'lS k was turned. z As thc catchc 1s of cf su gpcrting s 1s simuiissnsc as 23111 when i311 allowed to rise into its ncrmsl pcsiticn.- When the key rises the arm 184-. isu11- coupled from the disk 182 and is turns" back into its normal positicn by ihc spring 190. While the arm 18%: was coupled is the line is deter The keys gmzu finger shown an 7 m kcndcd i0 1 v er Gigi A 203 is the spams kc v 0'1 file that is'dcpressefi -21 it is dcsiz'eci 0 ccmn'asncc a; new line. Key is the letter space 152;; or the key 25 used for having an unwritten space between ,two words. In'tnc descnptacn oft-he re ceivezit was sairl that, on a, certain small 'numbcr'cf :pii'ernaticns being sens shrough' *0 at thc'lcfi; hamhmcl Cami thypapeif scrip (i on $9 1162? Bus This csit 'iu small number cf -s prcducd 07; the key and number of the mesa ,1 cc sifgzz' z-inte5;, then only .sfiectfbeingto turn 251's typcWhe-e r so'small an snglc that the can??? rcmains upon the rectangular prcjecticn '5' 0i Wnil impulses normal 18% Hand pcsiaion. The ward space key 204: prcduccs a numbcr- 0f alficmstlcns which corresponds "w a fircc'spa'cc 521c Sypewhecl the preferred arrangement 'bciilg to make iii'iis send. cncmore altercaticn than the line space key 203'; the cct'ch1l98 of the word space key being one division" fax-fiber slang the circumference of @111; holdmg mng 201. By dcpz essmgthc slgn chang cf the arm-194 is nm ic- -cjlegnicsslnsusl pcizatfi (Figs. li and 19); j

,Whiih correspcnfis fab file anguiar n1 ,ncc

W V rccciflngdnstrnmcht will prcscnib an y'e*- 27301? impfcssio'ri insbcad cf thei- A s- 4c and to cams-the typcwheel t-crci umto 1135+- scnt c115- She 'Qrsnsmii-mL'whichcsfisc a dificrrcn put the wbypcwhcci'izc cc mmci imio ihcprinting positicn. 4 hcgcccuc alcscribcfi 'crccscd c'v c enic'xid she ccnscg antic stcp 205 ct the ncsrmsl v dawn the pin 266 causes the stspflirfiltc-sinkg, it-ha key .13s ncw dcp A; I v A A will ccmmcnce was? special stating pcini 0 21 m cisc impcmm cc knack the circuit sudcnly t c, prs'vcna injnrimi'ssparking 1T0 ibis cm} fuz-mshed; Wlth a tall 188 which when mats norms P98113103, rests J againsa, thc'crm 209 pivccccl to jthc "segment 25185211211 keeps the contact brush a certsm distance swayfrom the ccntactlflmgwhcn- We? the sleeve 183 is being depressed. Em; as soon as ch: hsk 182 carrics the am 184: around VVHIQ. at the tall 188 -1eavcs the arm 209 5nd the ccntsct brush 183=-is cw-21' and brushed against the inncczczrctimfcc 18s is uncoupled again?" Bv this comp-fiance not only .cxsctitude in number cfh cliernas 50. ing key 202 thecrin 184 is caused turn back (2'; e. clockwise in Fig.1?) intd a ciif 1 fcrcnt starting positing so that, when key tiq-jns scnt is insgn'cd but it alsc' consfitiiteia a means of ciosmg the scncllng icn-c u ujfbe-- ffwre the maxnnum-current streggth in'th c I ,craziscd through depressing the,

. 0 mg key to the same cxtcnsjthlsguncuntlng is depressed after the dcpressioncichc sign.

changing key, the 184: marls tc turn 55 thrcugh; a grcatcc angle than it wcfildif it were depressed w hcutihc previcus'dcpression cf this Sign changingcksy, chspa-th de- .gn changiso ihe distance iron) the ncrm'al starting "form this function.

first clternaticn is reached, which lsjvcry desirable when one tmnsmifitcr panics large numbers of receivers Thc-ccgiflaci'z brush 1 88 is rctumcdinto itsl'normaidicgflxk cal p0s1ti0n by brushing against the} scgj- 919M298 winch is adcqtm tely slcped 15c ar v In case the sign chsngingikejjis fisediahziic 1s, when the} arm 184: 1s rctatcog 1n aback Warkl duection mtc the special starfiing papoint. .Bv the m 18% bcing'msc in turn through a carting spligtlcnal angle, adeter- 6 mined sddltzccal numbsrlof-altsmatlons-cre sitijcic O thcfiail 188 st'riks 'cgainstthe. icfi; hail'd prcgccfimn of the segnacnt208, so that when the slgn chcngmg key is il'scd. the

plingv disk 182. By finding'the buffer 184 that knocks against the stops'on a hinge and by giving this buffer-a .slanting bottom surface at its free end, the arm 18 1 is en abled to pass the ordinary stop 205 whenever it starts moving from its special start- I 198 belonging to it hooks itself onto the ing" positionQ and the stop 205 has been allowed to rise before the arm 184: has passed it. In such cases the buffer 181 is flipped upward on its hinge when it reaches the stop 205 and movesover it without the progress of the arm 184.- being arrested.

The transmitter shown in Figs. 20 to 23 works on the same principle as the transmit: tcr described above, differing only in the arrangement of its part. The parts in this modification which correspond with parts described above are furnished with similar signs of reference. ence consists in the catches 198 attached to the key levers 195 pivoted in the axis 211 being arranged in a straight row. These catches fit loosely in notches cut into a straight holding bar 212 which is fixed,to

support 213 which also serve as'guides for a slidingrack 214: having teeth (not shown in the drawing) on its left side. Attached to the sliding rack 21 1 is a stop 215 which limits the motion of the sliding rack by striking against the support'213. The 010s ing of the circuit in transmitting a message is done with the aid of a contact sprin 216 attached to the rack 2214 this spring eing arranged-to make contact with a contact strip 220 which is insulatingl-y fixed to a rockable contact making device consisting of the shaft 217, the arms 218 and a slanting cross bar 219, this contact making device being normally kept away from the contact spring 216 by retractile spring 221. The vertical shaft 222 is pivoted in the base plate 223 and in the arc-shaped support 224 and carries a rigidly fixed worm wheel 225 (Fig. 20). The worm wheel is rotated by the shaft 226 whichis turned by a rotary converter or equivalent machine not shown in the drawing. The shaft 222 in turning carries the coupling -disk'227 around with it by virtue of a pin .228 that projects into a slot in the hub of the disk. The. disk can move vertically on the shaft 222 the extent of its vertical movement being determined by the length of the slot surrounding the pin 228. A sleeve 229 which is rigidly fixed to a disk 230 fits loosely on the shaft 222 The disk 230 has four fixed teeth 230 and a semi-circular slot 230 into which a pin 236 protrudes which is fixed to a toothed wheel 231 located beneath the disk 230. spring 232 whose one end is attached to the pin 233 tends to turnthe disk 230 in the opposite direction to that indicated by the arrows in liigs. 21 and 22. The coupling disk The principal differ:

key into their normal position.

lifted the clutch disk 227 becomes disem- 227 is normally raised position a spring'235. Thedisk 230 "and the toothed wheel 231 are normally coupled to each other by a bolt 236 that extends through the toothed wheel and into the disk 230.

On a key e. being depressed the catch the teeth of the disk 230 and to set this disk in motion. The in 236 carries the toothed wheel 231 aroun also, so that the rack 240 that meshes with the toothed .wheel is moved held in its' represented and continues moving until the stop 215 strikes the catch 198 of the depressed key lever. The motion of the rack is accompanied with'the sliding of the contact spring 216 against the-contactbar 220 and the conand dot lines. When the stop 215 strikes the catch 198 it is pushed back against the action of its spring 200. The de res'sed lever is then released from the hol ing bar 212 and the spring 235 lifts the clutch disk 227 together with the bow 192 and the released On being gaged from the disk 230-and this'disk 230 together with the toothed wheel 231 and the III rack-214 are returned into their normal 0 1 tions by the spring 232 The :m key in rising allows the contact bar 220 to be pulled away from the contact spring 216 by the spring 221. The same action takes place on the depression of any key including the line space key 203 and the word space kc 204 but excluding the sign changing key 20% By means of the sign changing key 202 a determined and always equal number of alterations is sent over the line or lines be fore the rack 214 is moved out of its normal position. To accomplish this an an lar striker 237 is attached by the lever o the key 202 which, on the key being depressed,'

strikes against the horizontal part of the bolt 238 and pushes this bolt (which is normally held up by a fiat spring) down caus- Ill lane of the disk 230 thus uncoumesses of the rack 231 i with which the toothed wheel meshes hut-ting against the rack guide 213. it one side of the disk zl lll there is a pivoted angnla r circuit closer 2 1) with a hinged linger 2-H which yields to pressurefroin its left side but not from its right, so that when the disk 230 rushes againstit in turning in a clockwise direction, which happens when the sign changing key is depressed, the circuit closer 240 remains in its normal position. The position oi the disk 230 and of the circuit closer 2-l0 after the depression of the sign changing key is shown in Fig. 22, If is now pressed Zllown an ordinary key 6, g.

who

that the left end-of the slot 230 Fi -L has-- reached the pin 236 of the toothed Wheel 231 when the finger 24:1 of the circuit closer will assume the position shown in Fig. 21 and the disk 236 will commence carrying the toothed fwheel 231 around with it and cansing the raci Ell to move. ment the rack Ell commences to more he transmitting circuit is closed in tlie'ususl' manner by the. Contact spring 218 brushing against the contact can the contact previously existing between the circuit closer 2-10 and the contact sprin 242 being broken.

the depression of the sign changing key a number of alternations 1n addition to the I means tor setting the recording means into Z number sent when depressmgthe key by itselfnvill hareheen sent over the lines this additional nuniher corresponding to angular 'moven'ient determined by the length of the tromag'net electricany cormectecl with said transmitter, an armatm'e controlled by said electron'iagnetzmti adapted to operate the sign-setting mechanisnn and a armetnre controlled by slid eiectroniugnet and ad: nted to ooerate the completing mechali milfi upon the eessstion of current iinnoises from the transmitter In a system oi i record:

From the mo signs, the combination with' a device adapted to produce electrical current im electromagnet electrically connected with said device, an armature operated by said electroinagnet and adapted to control one part of the recording operation ofsaid recording means, and a second armature controlled liy-"said electronmgnet and operative upon the cessation. of the current impulses from the transmitter and adapted to control another part of the recording operation.

In a system of electrically transmitting and recording signs, the combination with a transmitter adapted to produce e ctrical current impulses, and a receivin strument; of recording means in i, receiving instrument, an electromag We electrically connected with said transmitter, setting means for setting the recording means into preparatory recording position, a rapidly responsive armature controlled by the said electromagnet and adapted to coir trol the said setting means, shifting means for moving therecording means into an ultimate recording position and a slowly responsive armature controlled by the said electronnm'net and adapted to actuate the said shifting means upon the cessation of the current 1H1 1ilS6S from the transmitter.

l, [En-a system of electrically recording signsfthe combination with a transmitter adapted to produce electrical alternating current impnlses, and a receiving instrument, ofrecordin means in said receivlng instrument, fan e eotromagnet electrically connected with said transmitter, setting apreparatory recording position, an armature controlled by the said electromagnet, SfilClfil'llltttlJ-Ifi controlling thesaid setting means, shifting means for'movingthe recording meansinto an ultimate recording position and a Second armature controlled by the said electromagnet and adapsed to actuate the said shifting means upon the cessation of the current impulses from the transmitter; I.

system oi electrically recording signs, the combination with transmitter adapted to produce electrical alternating current impulses, and a receiving Instrument, of recording means in said receiving instrument, an electromagnet electrically' connected with said transmitter, setting .means for setting the recording means into a preparatory recording position, a polarize cl armature controlled by the saioleleo tromagnet, said polarized,- nrmntnre controlling the said setting means, shifting means for moving the recording means into zin ultiniate reeording position, and an on: polarised "arn attire controlling the said shifting 3i i%fi l1f3, i-lldER'QGlflllZGCi armature transmitter.

being controlled by the said electromagnet and'actuating the shifting means upon the cessation of the current impulses from the 6; In a System of electrically recording signs, the combination with a transmitter adapted to produce electrical alternating current impulses, and av receiving. instru-- i'neiit, of recording means insaid receiving instrument, an electromagnet electrically connected with said transmitter, setting 7 meansfor setting the recording means into a preparatory recording position, a polarv idl onsive armature controlled by {the said electromagnet and adap l 'ontrol the said setting means, shifting [means for-moving the recording means into can ultimate recording position and a second ,}unpola rize d' armature controlled'by the saidelectromagnet, said unpolarized armature n gbeing operative upon the cessation of the current impulses and adapted to control the 'gaid'shifting means,

7,113. a system or electrically"recording s gns, the combination with a transmitter adapted to produce electrical current 1mpulses and a receiving instrument, of record mg means insaid receiving instrumentcom- I prising a sign-settingmechanism and other mechanisms for completing the recording operation, an electromagnet connected with saidv transmitter, an armature controlled by said electroma'gnet and adapted to operate the sign-setting mechanism, and'la second armature controlled by said electromagnet and adapted to operate the completing mechanisms.

8. In a system of electrically recording signs, the combination with a transmitter adapted to produce electrical current im-i pulses, and a receiving instrument, of'signsetting means in sald receiving instrument,

mechanism cooperating with said setting means,a local source of energy adapted to operate said setting means, a local source of energy adapted to operate said mechanism coiiperating with the setting means, electrical means adapted to be controlled by the, impulses. from said transmitter, two

separate means controlled by said ele ctrical means and each adapted to control \the ope eration of one of said local sources of energy.

9'. In a system of electrically recording signs, the combination with a transmitter adapted to produce electrical current imvpulses, and a receiving instrument, of recording means in said receiving instrument, one-means adapted to preparethe recording: operation-of said recor ing means, a local? source of en rgy for actuating the said pre-EE paring means, means adapted to complete"- the recording -operation, a local source of energy for actuating the said completing means, an electrical device adapted to be operated by impulses from the transmitter separate means operated by said electricai means each adapted to control theoperav tion of one of sald local sources of ener 10. In a system of electrically IGCOfiDK signs, the combination with a. transmitterand automatic means operative at the end of the recording operation to reset said nocording means to the normal position.

11. In a system of electrically recording signs, the combination with a transmitter adapted .to produce electrical current impulses, and a receiving instrument, of re cording means in said receiving instrument, an electromagnet electrically connected with said transmitter, setting means for setting the recording means into si -preparatory recording position, an armature controlled by the said electromagnet and adapted to control the said setting means, shifting means for moving the recording means into an ultimate recording position, a second armature controlled by the said electromagnet and adapted to control the said shift means, a spring connected with the sai recording means and having the tendency to reset the s e, and automatic means operative at thie end of the recordin operation to break l c onnection between the said re cordin means and the said setting means.

12. n a system of electrically recording signs, the combination with a transmitter adapted to produce electrical current impulses, and areceiving instrument, of recording means in said receiving instrument,

an elect'romagnet electrically connected with said transmitter, an armature controlled by said electromagnet and adapted to prepare the recording operation of said recordin means, a-seoond armature controlled by sai electromagnetand adapted to complete the recording operation, automatic means op-. erative at the end of the recording operation to shift said recording means laterally and in the direction of the printing line.

13. In a system of electrically recording signs, the combination with, .a transmitter adapted to produoe electricel current in pulses, and a. receiving instrument, of recording means in said receiving instrument, a platen, an electrical'device connected with said transmitter, means controlled .by said electrical device to set said recording means in recording" position, nicens separate from said setting finesse and consrolled by said electrical device to move seio platen and re cording device in contcci. "with each other, means to separate the and recording means, and'mesns operated by the segamt ing means to shifltlie'recording means lat orally and in the direction of the printing line. i

14. ln s system of electrically recording signs, the combination with a transmitter adapted to produce eleciricsl current, inipulses, and s. receiving inscrumenc, of recording means in receiving instrument, plesen, an electrical device connected with said izrsnsmiti'er, controlled by said electrical devi s to sel; said recording means in recording position, cleanses-perms from said set-sing means and controlled by said electrical device so move said platen and recording device in contact with each other, means to separate the platen and recording means, and operated by the separating means shift the recording means leterally and in the direction of the printing line and to reset said recording means.

15. In asystem. of electrically recording "signs, the coi'nbinaijion with a irensmicter igns, the combination. with trsi adapted to produce electrical curren'; im pulses, and a receiving instrument, of recording means in said receiving instrument, a platen, an electrcmegnes electrically connected "it-l1 said transmitter, an armature concrolled by said electronisgnet, means controlled by llic said srinsiure'for setting the recording means into recording position, asecond arms-sure controlled by the said eleccrornsgnet, means controlled by the second armature for moving the said platen. and recording device in conssct Willi each other, means to separate the platen. and recording means, and means operated by the separating means to shift the recording means lstorally andin the direction oi the printing line and to reset said recording means.

16. In a, system of electrically recording signs, the con'iloinssion with s transmitter adapted to produce electrical CHlIQIlt'lIllpulses, of s rotary and laterally sl iftsble type wheel, on electromeg'nei; electrically connectedwichseid transmitter, means for rotating said type Wheel, armature for controlling the sg id rotating means, said armature beingcontrclled by the said electromagnet, means for shifting-the said type liceLand a. second armature for controlling theuseid shifting means, said second armature being controlled by lliessid electromagnet.

17. In a system. of electrically recording its ,dzipted to produce elecfirical currenc i111 nulscs, and a receiving instrument of a. ro-

tar shaft, a type Wheel longitudinally shift-able clieron and having arranged about its circumference, an escspsmcnt device on said Sll-jlfl adapted to car es the retro tion of the type-Wheel on the shaft, an electromagnet electrically connected icli said 7() transmitter, means for rotating the said type wheel, on armature controlled by said 'electromsgnet to control said rotating means, a second crmziture cont-rolled by said electromagne'b to operate said esccpenient device, and means operated by said escapenient device to reset said type Wheel.

'18. In a S"Si16.11 of electrically recording "lgilS, the combination with o transmitter adapted i0 produce electrical current im- 0 pulses, and a receiving instrument, of :1. rotary shaft, type Wheel longitmiliimlly shiftsble thereon and having types arranged about .ils circumference, a. soothed rack on shaft having stepwise longitudinal s5 movement iliercon and adapted to impart stepwise shifting movement to said type Wheel, automatic means tending to reset she type w.eel, an electric device operatively connected with. said transmitter means conso crolled by the said electric device and adopted to rotate said shaft and type Wheel in opposition to said automatic resetting means, means controlled by said electric de' vice which are adapted. to impart shifting movement to said rack, and'mesns operated by said rack upon its shifting inirvemen cto disconnect said type wheel shell. from the said rotating means and to throw said resetting means into operation. I

19, In a, system of electrically recording signs, the combination with a crensmitter adapted to produce electrical current iinpulses, and receiving instrument, of recording means in said receiving instrument, a platen, en electromsgnet electrically connecied will, ssid transmitter, a rapidly responsive armature controlled by said elecsromegnel") means controlled by the said armature and adapted to set said recording 119 means in recording position, a sluggish arms,- r-ure connected with said electromegnetand means cont-rclledby the said sluggish armsiure and adapted to throw said platen ogeins the recording means upon the cessaion of the current impulses.

20, o syelein of electrically recording signs, illllZ conibinesion Willi transmitter adapted to produce electrical cnrrenl; pulses, m d a. receiving inssrursiens, of a i wheel, means to rotate said type wheel,

' platen, means to move said platen in consect Willi said laype Wheel, means to retract the platen from the type wheel an electro magne eleciricsll connected with said 127 transmitter, s rapidly responsive armature for actuating the said type wheel rotating means, said idly responsive armature being controlled by the said electroinsgiiei,

a. sluggish miniature controlled said electype wheel a 21. In a system of electrically recording 5 responsive arn'lature controlled by t id 25 adapted to produce electrical current tromagne't means controlled by. the saidarinature and adapted upon the cessation of the current impulses to operate said means for moving; the platen n contact with the v"signs, the combination with. a transmitter adapted to produce electrical current unpulses, and a receiving instrument, oi a type wheel, a, platen, means to retract the platen, froin the type wheel, means connectedvdth said retracting means to-reset said type wheel an elect connec d with said unsold er, a raph tron'iagnet and adapted to rotate said type wheel in printing position, a sluggish armalure controlled by said electromagnet means controlled by the said armature and adapted upon the cessation of the'current impulses to operate said means for moving the platen in contact w" the type wheel.

5.22. In a s sally recon signs, the cc nation @1511 a transm pulses, and receiving insluuroent, oi; a type wheel having typos arranged about its circumference, a platen, means to move said platen in contact with said type wheel,

3o means to retract the platen from the type wheel, means connected with said retracting means to reset said type wheel and to impart stepwise lateral movement thereto, an electromagnet electrically connected with said transmitter, a rapidly responsive armature controlled by said electrc-magnet means controlled by the said armature and adapted to rotate said type wheel in printing position, a sluggish armature controlled by said 40 electromagnetand adapted upon the cessation of the current impulses to operate said means for moving the platen in contact with the vtype wheel,

23. In a system of electrlically recording signs, --the combination wi h a transmitter '50 and movement to said type} wheel, shifting means operati e after rotating the type wheel at a determined angle to return said type wheel laterally into initial position and in a direction opposite to the stepwise lateral 56 movement, an clectromagnct, a rapidly'res'ponsive armature co'tiperating with said. electromagnet means controlled hy't'lle said armature and adapted'to rotate said type wheel, a sluggish armature cooperating with 60 the electromagnet and adapted to operate said type wheel shifting means.

24. In a system of electrically recording signs, the combination with a transmitter adapted to produce electrical current 1m--- pulses, and arece1v1ng instrument, of a trical me type wheel having types arranged about its circrunferencc, means to impart stepwise lateral movement to said type Wheel, shifting means operative after rotating the type wheel at a determined angle which is the smallest angle of rotation of the type wheel caused by the current impulses from the transmitter to return said type wheel laterally into initial position and in a direction omiosite' the tepwise lateral movement, anelectr rapidly responsive armawith said clectromagnet the said armature and urn. zre co 'ipera ng with the electromagnet and adapted to operate said type-wheel shifting means,

25. In system of electrically recording signs, the combination with a transmitter adapted to produce electrical current impulses, and a receiving instrument, of a type wheel, means to impart stepwise lateral movement thereto, meansto lock. said type wheel in position when shifted laterally, means tendingto return the type wheel into initial lateral position, means to release Said locking means, means operative after rotating the type wheel at a determined angle to control said releasing means, electrical means connected with said transmitter and means operated by said electrical means to rotate the type wheel.

26. In a. system of electrically recording signs, the combination with a transmitter ada. led to produce electrical current, impulses, and a receiving instrument, of a. rotary shaft, type wheel longitudinally U, type wheel, a Sluggishi shiftable thereon and having types arranged about 1ts circumference, a shiftmg device connected with the said shaft and having a type wheel. actuating and a ty e Wheel releasing position and adapt to im art lateral shifting movement to the type w eel v on the shaft,- an electrically operated device connected with said transmitter, means controlled by said electrically'operated deviceand separate from said rotating 'means to operate said shifting device into its releasing position, means operative when rotating the type wheel at a determined angle to prepare the operati" shifting do and means c ltrollcd by said separate eleccomplete the operation of said, means t its releasing position.

27. In a system of electrically recdrding signs, the combmatlon with a transmitter adapted to produce electrical current impulses, and a receiving instrument, of --a rotary shaft, a type wheel longitudinally shiftable thereon and having types nmnged about its circumference, a shifting device in connection with the said shaft for im rting shifting movement of th e type wheel on {116' of; said means to throw the mto the releasing position,

irow the. shifting device into 120 

